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A. 0. WEST.

(No Model.)

LAMP.

No. 422,864. Patented Mar. 4,1890.-

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UNITED STATES PATENT OFFIcE.

AUGUSTINE O. WEST, OF SOMERVILLE, ASSIGNOR TO THE SMITH & ANTHONY STOVECOMPANY, OF BOSTON, MASSACHUSETTS.

LAM P.

SPECIFICATION forming part of Letters Patent No. 422,864, dated March 4,1890.

Application filed September 16, 1889. Serial No. 324,041. (No model.)

To all whom it may concern.-

Be it known that I, AUGUSTINE G. Wnsr, of Somerville, in the county ofMiddlesex and State of Massachusetts, have invented certain new anduseful Improvements in Lamps, of which. the following is aspecification.

The object of my invention is to furnish a lamp in which a greatercirculation of air is supplied to the flame than in those heretoforeused, so as to increase the intensity and size of said flame. I

In the accompanying drawings, Figure 1 illustrates a sectional view ofmy improvements as attached to a lamp. Fig. 2 is a detail. Fig. 3illustrates a modification.

Similar letters of reference represent like parts in all of the figures.

Aand B are the outer and inner cylinders, respectively, forming anannular chamber between them which incloses the tubular wick a. Theupper end of the inner tube B is deflected inward, as shown at b.

O is an inverted cone, which is located between the walls of the innercylinder B, the deflected edge I) of said cylinder serving as a rest forthe outwardly-expanding sides I) of the cone O. Said sides D and thebase E of the cone C have openings or perforations d 9, respectively,for a purpose hereinafter to be described.

F and G are two disks having openings or perforations f, and these disksare connected by a ring H, which fits closely within the walls of theinner cylinder B, and which is adapted to slide vertically therein. Thecone 0 is secured to the disks F and G by means of a rod I, passingthrough the center of the baseE of the cone, its apex c, and the centersof the two disks F and G, and with said apex c in juxtaposition with thecenter of the upper disk F. The ring H serves asa guide to hold the coneO firmly in a vertical position with its apex c in the center of thecylinder B and to allow said cone to slide vertically in said cylinder.

My improvements being applied to a lamp in which air is admitted withinthe inner cylinder B, said air will pass up through the openings f inthe disks F and G, and through the openings d and e in the sides andbase of the cone to the flame, and cause a constant circulation of airto and within said flame, and thus increase its intensity. Thedeflecting sides D of the cone above the wick tubes or cylinders willcause the flame to be deflected also, and thus increase its size. Theinwardlydetlected edge I) of the cylinder B will hold the cone O awayfrom the sides of said cylin der, so as to allow plenty of circulationof air between said cone and cylinder, and thus add still more to theintensity of the flame.

If desired, a second and smaller cone K, haw ing openings i in its sidesand base, may be attached in an inverted position in the tube B to theapex of the cone 0, and the ring H and perforated disks F and G shouldthen be attached to the apex of the cone K, as shown in Fig. 3.

WVhat I claim as new, and desire to secure by Letters Patent, is

1. The combination, with the wick-tubes,

the inner one of which has an inwardly-deflected upper edge, of aninverted hollow cone having openings in its walls and base, said conebeing inclosed within the inner tube, extending above the same, andresting upon the deflected edge of the inner tube, all as set forth.

2. The combination, with the two wicktubes, one being inclosed withinthe other, of

two inverted hollow cones having lateral openings in their walls andopenings in their bases, one cone being disposed entirely within theinner tube and the other cone being partly inclosed within said tube andextending above the same, all as set forth.

3, The combination, with the wick-tubes, of thetwo inverted hollow conesO and K, the guide-ring H, and means for connecting said cones and ring,all as set forth,

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this 12th day of September, A. D.1889.

AUGUSTINE o. wns'r.

Witnesses:

PENNINGTON I-IALsrED, ARTHUR W. Onossnnv.

